Cutting device for glass and other articles



Aug. '1 2, .1924.

' C. R.MaCLEAN i CUTTING DEVICE FOR yGLASSND OTHER ARTICLES Filed Feb. 20,` 1972 Figi.

Patented l2, lglfil.

HOB GLASS OTHER ARTCLES.

L ies.

Application filed February 20, 1922.Y Serial No. 537,711.

To all inflow t may concer/2i:

Be it known that l, Cniirfrou. MACLEAN, a citizen of the United States, and resident of Stoughton, county of Norfolk, of hilassachusetts, have invented an improvement in Cutting Devices for Glass and @ther Articles, of which the `followiing` description, in connection with the accompanying drawing, is a specification, like chai'- acters on the drawing representing` like parts.

This invention relates to improvements in devices for cutting glass and other articles and comprises certain improvements upon the mechanism disclosed in my prior application, Serial Number 474,6Z70, tiled J une 3, 1921.

@ne of the principal objects of the present invention is to provide a gl ass cutting device having means for supportingl a plate of glass, or other article, to be cut and comprising` a pair of cutting` inst-rumentalities to engage the opposite faces of the plat-e of glass, or other article, to be cut and provided With means for forcing said cutting` instrumentalities against the faces of the glass with equal pressure irrespective of the Weight of the article to be cut.

further object of the invention is to provide a device of the character described with. means for simultaneously adjusting the pressure with Which the cutting inst-rumentalities are forced against the glass.

A further object of the invention is to provide means for limiting the approach of the cutting instrumentalities sov that they will not engage cach other and thereby dainag'e the cutting; points or edges of the cutters.

tt further object of the invention is to provide novel means for yieldably supporting the cutting` instrumentalities. ln the preferred embodimentof the invention the are carried at the ends of the arms shafts which are suitably mounted in asupporting fran'ie.

it further object the invention is to roi/'ide novel fo of rigid irame for ort-uioL the rock shafts which carry the preierabljfY the frame comprising a pair ci parallel sleeves havin suitable jouriii which said rock shafts are mounted. 'further object of the invention is to .de stable means for directing the plate of relatively to tl'ie cutters so that a desired4 contour may be produced. lDesrably ,Ore

the device is provided with a gauge anges by means of which the Width or diameter, or both, of the article to be cut may At be readily determined. further object ofthe invention is to provide a glass cutter' of the type specified with means for pivotally, supporting the plate of glass in order to enable a circular disk to be cut therefrom.

further object of the invention is to provide adjustable means for pivotally support ing the plate to enable disks of different diameterto be cut from a plate of glass.

Othery objects and featuresof the invention ing and Will more fully appear from the followdescr'iption vand theannexed drawings will be particularly pointed out in the claims.

preferred embodiment of the invention is illustrated in the accompanying drawing iii which,

Fig. 1 is a plan view of a device for cuttino;

glass and other articles;

Fig. 2 is a side elevation of the saine;

l? 3 is an end elevation of the device shoivn in Figs. 1 and 2 viewed from the left toward the right;

t shows an end elevation of the device port bed tion as viewed from the right, the outer supfor the article being removed and the of the machine shown in vertical sec- G is a transverse vertical section on line 6 6, 1, viewed from the left toivard the right.

The pre'terred embodiment of the glass cutting device illustrated in the accompanying base cent drawings comprises a `frame having a 1, preferably of metahprovided adjaone end with a standard 2 which may be formed integral With the base, but prefcr ab ly is secured to the saine by screws, or

other fastening., `said standard serving to supportthe rrock shafts which carry the cutting instrumentalities,' TWhile any suitable means may be provided for journalling` the rock allel shafts in the standard 2 a pair of parsleeves 3 and l desirably are securely anchored in suitable apertures in the standand extend at right angles therefrom, Vrebly parallel. t/Q 'the base. The rock Y yai rock shafts.

shafts and 6 arejournalled in these standards preferably in bushings suitably located at the ends of the sleeves. Cutter a-rms 8 and 9 .are secured to the.respectiveshafts 5 and 6, preferably said armshaving square or vrectangular apertures Which lit upon squared portions l() and ll of the respective u Nuts l2 and lf3, upon threaded extensions. Vof the rock-shafts; serve to clamp the arms lirmly against the shouldered portions thereof. Desirably the lovver roclr shaft 5 provided ivith a longer cylindrical extension la Which is not threadedLbutV isjournalled in the web l5 of aY supporting bracket 1.6 Which is carriedbythe base plate and is provided With an upperViiat'larticlejsupporting surface 17 located in a plane intermediateof the nor- V l mal position'of the ends of the cutter arms. V`ZO suitable outing instrumentality is mounted in the Yend portion of eachiof the cutterarms 8 and rAs illustrated herein the cutting instrumentalities 4are inthe form yof hardened steel disks 18 andV 19. vHowever, diamonds, or any other usual form of glass cutting instrumentality may be em` ployed.` Y l Suitable means are provided for forcing the glass cutting'instrumentalities against Y the opposite faces of the plate of glass, or

other article to be cut, With equal pressure independent of theiveight of the glass, or article to be cut, which is carried upon the supporting surface ll'f'and upon other Vco-operating supporting means which ivill hereinafter be 'more fullly described,

Desirably a convenient means for thus forcing the cutting instrumentalities against the opposite faces of the glassivith equal pressure,` which is illustrated herein, comprises levers 20V and 2l which are rigidly secured. preferablv to the opposite ends of the rock shafts 5 and 6 and are actuated by resilient means connecting correspond-Y ing arms of said levers. The levers 2O and 2l desirably are provided With rectangular apertures which lit upon corresponding` rectangular portions of the ends of the rock shafts and 6 and vare secured in place by suitable nuts 22 upon the reduced ends of said rock` shafts. The corresponding arms 23 and 24 of said levers, that isrto say the arms which extend in the same direction and preferably inthe same general direction as the cutter arms 8 and 9, are connected by resilient means such as a heli cal spring 25 'which is secure-d at one end 'to one ofA said arms, preferably the lower and V*at its other end is adjustably secured to the other arm.

As' illustrated in Fig. 3 the upper end of the helical spring 25 is connected to the Vlower end of a threaded Astud 26 ivhich asses through the arm 24 ofthe lever 2l and is engaged. by a; preferably knurled be provided to clamp against the ed. As this spring is connected to both of the lever arms 23 and Q-t it will exert equal pressure through the rock shafts upon the arms 8 and 9 ivhich carry the cutting instrumentalities, thus causing` them to exert equal pressure upon the opposite faces ol the plate of glass, or other article to he cut. Obviously any adjustment `which is made Vof the tension of the spring ivill correspondingly iary equally the pressure of the cutting' instrumentalities upon the opposite faces of the plate of glass or other article to be cut.

It is desirable that means shall be provided for limiting the approaching movement of the Ycutters so that they will not impinge against each other and thereb)v dull the cutting instrumentalities. A ny suitable stop mechanism may be provided. A prcferred means which is illustrated herein comprises a bolt 2S which passes through the arms 29 and 30 ol the levers E20 and Q1 respectively, said bolt being provided with a stop nut 3l which limits the separation vof the arms 29 and 30 and conscquentl \v limits the approach of the oppositely extending lever arms Q53 and 2l and also the cutter arms S and 9` The bolt 28 prefciw ably is mounted in the lower portion oi' the standard 2 and is secured therein by :i set nut 32` Obviously the position of the stop nut 3l also serves to determine the posi'iou of the loiver cutter relatively to the plum;- lT upon which the plate ot' glass or other article, is supported.

In addition to the support l?. desii'ahlj: an adjustable support and gauge is pro vided which may be adjustably mounted upon the sleeves 3 and a. fis illust :und herein the adjustable guide and support comprises a hub El?, which is sliduhly moulu ed upon the upper sleeve -l which serves to support a flanged or channeled guido 3l; Which preferaliliv extends a considerable distance in each direction from the huh. the guide being in parallelism with and iu the same plane as the supporting' surface 17 of the bracket l5.

The guide desiiably is provided with downward extensions oi' lugs 5%.? :nifl 56 ivhich embrace the lovvei sleeve il. .il sot screnY 37, mounted` in the extension 36, may i loivci sleeve 3' and firmly clamp the quille in adjusted position. The extension 3o ma he of sufficient length to present an index BR in cti-operative relation to a suitable scale 39 mounted upon the base l so that the guide may be set at any desirable distance from the vertical plane of the cutting' in` strumentalities as illustrated in L.

'By reason of this construction the desired lll) llli

Width of a strip to be out from a sheet of glass can ne re dily and quickly determined and if a number of pieces are to be cut the adj .stment of the guiue will enable the same to be accomplished with accuracy.

A further 'feature of the invention consists in providing meansJ for cutting circular disks from plate of glass. This. is complished providing an adjustable pivotal supporting member which is adapted toco-operate with the supporting surface 17 above described. ln the preferred construction illustrated herein hoolishaped bra het Ll()V is provided ".vhich is adapted to embrace the lower sleeve 3 and is adapted to be secured in any adjusted position along said sleeve by mea-ns of a clamping screw el mounted in the hookshaped bracket in such a manner as to engage the sleeve. The bracket 40 is provided with standard or post l2 which rests upon the base l of the device. The standard or post has a socket 43 to provide a journal for the stem lll of a pivotal member a which preferably comprises -a suction device, such as, a rubber suction cup which When pressed against the surface of the glass will adhere firmly to it.

The bracket may beprovided With a downwardly extendingindex i6 adapted to cci-operate With a suitable scale l? which preferably is graduated in such a manner as to indicate the diameter of the disk to be cut. As illustrated herein the graduations of the scale 47 are intervals half the Width of the scale 39. rlhusby positioning the index i6 of the pivotal stand opposite a selected graduation on the scale l? a disk, equal in diameter to the numeral upon which the index 46 is set, will be cut.

In the use of the pivotal supporting device for cutting circles the pivotal supportserves to sustain the center of the plate While the edge of the plate which projects beyond the plane of the cutting instrumentalitie's 18 andl 19 will rest upon the face 17 on the supporting bracket l5.

It Will be understood that the embodiment of the invention disclosed herein is illustrative and not restrictive and that various changes in construction, form and arrangement of parts may be made Within the spirit and scope of the following claims.'

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. A glass cutting device comprising a frame having a support for the article to be cut, co-operating cutting instrumentalities mounted upon said frame and positioned to engage opposite faces of the article and av #le resilient pressure-applying means acti -iinultaneouslv upon said cutting instrumentalities to force said cutting `instrumentalities against opposite faces of the `article With equal pressure.

2. A glass cutting device comprising a frame having a support for the article to be out, co-operating cutting instrumentaltities mounted upon said frame and positioned to engage opposite faces rof the article, a single resilient pressure-applying means acting simultaneously upon 'said cutting instrumentalities to force said cutting instrumentalities against opposite faces of the article with equal pressure and adjusting means operable to vary the force of said pressure-applying means.

3. A glass cutting device comprising a frame having a support for the article to be c ut, Vco-operating cutting instrumentalities mounted upon said frame and positioned to engage dopposite faces of the article, a single resilient pressure-applying means acting simultaneously upon said cutting instrumentalit-ies to force said cutting instrumentalities against opposite faces of the 'article With equal pressure, adjusting means operable to vary the force of said pressureapplying means and means for limiting the approaching movement of said cutting instrumentalities to prevent them from engaging each other. f

4. .er glass cutting device comprising a pair of rock shafts having arms provided With cutting instrumentalities positioned to enga on osite faces of the article to be cut and a single resilient pressure-applying means acting upon both of said rock shafts to force the cutting instrumentalities against the opposite faces of the article with equal pressure.

5. A. glass cutting device comprising a pair 'of rock shafts having arms provided with co-operating cutting instrumentalities .positioned to engage opposite faces of the article to be cut, a sin resilient n'ieans connected to both of said roch shafts and operable to force said cutting instruinentalities against the opposite faces of said article and means for adjusting said resilient means whereby the pressure applied to said cutting instrumentalities may be varied.

6. A glass cutting device comprising a pair of roch shafts having arms provided `ivith co-operating cutting` instrumentalities positioned to engage opposite faces of the article to be cut, levers rigidly connected to said roclr shafts and adjustable means, resiliently connecting said levers, acting to` force said cutting instrumenta tiestovvard Yeach other with. equal pressure.

7. A. glass cutting device comprising a pair of roclr shafts having arms provided with co-operating cutting instrumentalities positioned. to engage opposite faces of the article to be cut, levers rigidly connected to said rock shafts, adjustable means, resiliently connecting said levers, and acting to llO 'said cutting instruinentalities.

8. A glass cuttingdevice comprising a air of rock shafts havin'e arms rovided l/iv-ith izo-operating cutting instrumentalities positioned to engageopp'osite faces of the article-to be cut, levers rigidly connected to said rock shafts, adjustable means, revsilien'tly connecting 'corresponding arms of lsaid levers, and acting to vforce said cutting instrumentalities toward each other and means engaging the other corresponding arms 'of said levers for adjustably limi-ting the approaching movement of said cutting instrumentalities.V

9. A glass cutting'devic'e having 'a frame 4comprising apair of kparallel sleeves rigidly connected together -at one end Yand separated at the other end, rock shafts vmounted "Within saidsl'e'eve's, arms on saidY rock shafts having co-operating cutting instrumentalitiesadapted, to engage opposite faeesof the article to be cutan'd a resilient means actingthrough said rock shafts to force said cutting instrinnentalities against the faces 0f the article with equal pressure.

10. A glass cutting device having aV frame comprising a pair of parallel sleeves rigidly Yconnected together at one end 'and separated at the other, journals in said sleeves,

rock shafts mounted in said journals, 'arms on said rock shafts having co-operatmg cutting mstrumentahties adapted to engage opposite faces of the article, levers rigidly connected to said rock shafts and means, connecting said levers, and acting to force said cutting instrumentalities against the vfaces of the article with equal pressure.

11'. A glass'cutting device comprising a base having a standard, parallel rock shafts mounted in said standard having arms provided with tio-operating cutting instrument-alities positioned Vto engage opposite faces of the article to be cut, resilient means acting to force said c-utting instrumentalities towardV each other with Vequal pressure, means for supporting the article to be cut locatedr in proximity to said cutting instrumentalitiesf and means for guiding the article to be cutin a Vpredetermined path relative to said cutting instrument-alities.

12. A glass cutting device having airframe comprising a standard, a pair of parallel .sleeves mounted in said standard, rock Vshafts journalled in said sleevesA and having' arms provided with 'co-operating cutting instru- Vmentaliti'es positioned to engage opposite face's 'of the article to becut, resilientmeans yfor forcing said cutting instrumentalities toward 'each Yother with equal pressure, means for supporting the article to loe vcut located adjacent to said cutting instrumentaliti'ei's and a gauge adj'ustably mounted on to be cut located adjacent to said cuttin one of said sleeves for positioning the article to be cut.

18. A glass cutting device having a frame comprising a standard, a pair of parallel sleeves mounted in said standard, rock shafts journalled in said sleeves and having arms provided With co-operating cutting instrumentalities positioned to engage opposite faces of the article to be cut, resilient means for forcing said cutting instrumentalities toward each other with equal pressure, means for supporting the article to be cut, located adjacent to said cutting instrumentalities, a gauge adjustably mounted on one of said sleeves for positioning the article to .be cut and a scale mounted on said base,

graduated to indicate the distance of said gauge from said cutting instrumentalities.

14. A glass cutting device having a frame, comprising a standard, a pair of parallel sleeves mounted in said standard, rock shafts jouriialled in Vsaid sleeves and having arms provided with co-operatiiig cutting instrumentalities positioned to engage opposite faces of the article to be cut, resilient means for forcing said cutting instrumentalities toward each other with equal pressure, stationary means for supporting the article to be cut, located adjacent to said cutting instrumentalities, and pivotal supporting means adapted to co-operate with the stationary article-supporting means whereby the article may be rotated and a circular section cut therefrom.

Acured to said article and co-operating with said supporting means to enable a circular disk to be cut from said article by rotation of the article about the axis of said pivotal instrumentality. l

16. A glass cutting device having a frame comprising a base and a standard, a pair of parallel sleeves mounted in said standard, rock shafts journalled in said sleeves and having arms provided With co-operating cutting instrumentalities positioned to engage opposite faces of the article to be cut, resilient means for forcing said cutting instrumentalities toward each other with equal pressure, means for supporting the article adj ustahly instrumentalities, a bracket lmounted upon thelowermost of said sleeves havinga p ost resting upon said base, means for securing the bracket to said sleeve and a pivotal instrumentality mounted in said post comprising a suction member adapted to be secured to said article and co-operating With said supporting means to enable a circular disk to be cut from said article by rotation of the article about the axis of said pivotal instrumentality.

17. A glass cutting device having a frame comprising a base and a standard extending upwardlyv therefrom, a pair of parallel sleeves mounted in said standard, rock shafts onrnalled in said sleeves and having arms provided with co-operating cutting instrumentalities positioned to engage opposite faces of the article to be cut, resilient means for Jforcing` said cutting instrumentalities toward each other with equal pressure, means for supporting` the article to be cut, located adjacent to said cutting` instrumentalities, a bracket adjustably secured to the loWermost of said sleeves and having a post resting on said base, a pivotal instrumentality rotatably mounted in said post comprising a suction member adapted to be secured to said article and co-operating With said supporting means to enable a circular disk to be cut t'rom said article and a scale on said base located in co-operative relation t0 said cutting instrumentalities having graduations corresponding to the radius of the disk to be cut.

ln testimony whereof, l have signed my name to this specification.

CLIFTON R. MAGLEAN. 

